ObjectiveTo discuss the factors influencing the success or failure of hydraulic enema reduction and its predictive value.

MethodsThe clinical data of 126 children with intussusceptions were retrospectively analyzed.The cases were divided into the success group(100 cases)and failure group(26 cases)according to whether the reduction was successful or not.The basic data and ultrasonic performance between two groups were compared.The logistic regression analysis was used to analyze the influencing factors of the reduction of hydraulic enema, and the ROC curve was used to analyze the predictive value of different indicators for the success or failure of reduction.

ResultsThe differences of blood stool, pelvic effusion, intusculation location, blood flow distribution, onset time, concentric circle wide diameter, concentric circle thick diameter, sheath thick diameter and sleeve length were statistically significant(P < 0.05 to P < 0.01).The results of logistic regression analysis showed the width diameter of concentric circles, bloody stool, duration of intussusception and length of intussusception were the independent risk factors of reduction(P < 0.01).The specificity, sensitivity and AUC of combined prediction of the above factors were 89.3%, 88.8% and 0.933, respectively, and the specificity and sensitivity were higher than those of separate prediction(P < 0.05).

ConclusionsThe ultrasound finding combined with clinical data can effectively predict the outcome of hydraulic enema reduction, and reduce the pain of children and risk of ineffective treatment.